Just installed Ubuntu Server 12.04 on my laptop. The desktop version always had driver issues but only with WiFi not the ethernet, and I could just hard wire and install the proprietary drivers manually and it would work. But on my installed server I get no Ethernet connectivity.

ifconfig only shows lo for loopback an not eth0 like usual.

lshw -C network



*-network DISABLED

   description: Ethernet interface

I tried

ifconfig up



up: error fetching interface information: device unknown

then

lsmod

showed that by b34 and b44 modules are there but they were showing 0 in the column for in USE and no programs were using them, but b44 was using another program.

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UPDATE 1:

lspci -nnk | grep -i -A2 net



05:00.0 Network Controller 0280 Broadcom Corporation, BCM4311 802.11B/G WLAN 14E4:4311 REV 01

Subsystem: Dell Wireless 1390WLAN mini card 102b:007

Kernel driver in use b43-pic-brige

Kernel module: ssb



08:00.0 Ethernet Controller 0200 Broadcom Corporation, BCM4401-B0 100BASE-TX 14E4:170C REV 02

Subsystem Dell Device 102B01f5

Kernel driver in use b44

thank you.